<template>
  <!-- 注册页面的整体盒子 -->
  <div class="reg-container">
    <!-- 注册的盒子 -->
    <div class="reg-box">
      <!-- 标题的盒子 -->
      <div class="title-box"></div>
      <!-- 注册的表单区域 -->
      <el-form ref="loginRef" :model="loginForm" :rules="rulesObj">
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" placeholder="请输入用户名" ></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input v-model="loginForm.password" placeholder="请输入密码" type="password"></el-input>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" @click="onSubmit" class="btn-reg">登录</el-button>
          <el-link type="info" @click="$router.push('/reg')">去注册</el-link>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
  import {loginAPI} from "@/api"
  import {mapMutations} from "vuex"
  export default{
    name:"Login",
    data(){
        return{
          loginForm:{
            username:"",
            password:"",

          },
          rulesObj:{
            username:[
              {required:true,message:"请输入用户名",trigger:'blur'},
              { pattern: /^[a-zA-Z0-9]{1,10}$/, message: '用户名必须是1-10位的字母数字', trigger: 'blur' }
            ],
            password:[
              {required:true,message:"请输入密码",trigger:'blur'},
              { pattern: /^\S{6,15}$/, message: '密码必须是6-15位的非空字符', trigger: 'blur' }
            ],
          }
        }
      },
      methods:{
        ...mapMutations(['updateToken']),
        onSubmit(){
          //js兜底检验
          this.$refs.loginRef.validate(
              async valid =>{
                if(valid){//检验成功
                  const {data:res}=await loginAPI(this.loginForm)
                  //console.log(res)
                  //登录失败
                  if(res.code!==0){
                      return this.$message.error(res.message) //阻止事件提交
                  }
                  this.$message.success(res.message)
                  this.updateToken(res.token)
                  this.$router.push("/")
                }else{
                  console.log("失败")
                  return false //检验失败
                }
              })

          }
        }
  }
</script>

<style scoped lang="less">
  .reg-container {
    background: url('../../assets/images/login_bg.jpg') center;
    background-size: cover;
    height: 100%;

    .reg-box {
      width: 400px;
      height: 270px;
      background-color: #fff;
      border-radius: 3px;
      position: absolute;
      left: 50%;
      top: 50%;
      transform: translate(-50%, -50%);
      padding: 0 30px;
      box-sizing: border-box;

      .title-box {
        height: 60px;
        background: url('../../assets/images/login_title.png') center no-repeat;
      }

      .btn-reg {
        width: 100%;
      }
    }
  }
</style>
